Paper-bag machine.



No. 745,360. Patented Dec. 9. i902.

C. E. DULIN.

PAPER BAG MACHINE.

' :Application filed Nov. 1901.;

(No Mmiel.) 5 Sheets-Sheet l.

me wams PETERS so.. mofuumo.. wnsnmsmw. n4 c.

No. 7|5,360. Patented Dc. 9. 1902.

c. E. uuuN.

PAPER BAG MACHINE.

(Avppeation Med Nov. 6, 1901.)

5 Sheets-Sheet 2.

(No Muriel.)-

NNNJIN.

Patented Dec. 9, |902. C. E. DULIN.

PAPER BAG MACHlNE.

E'Application lefi Nov. G, i901.:

As sheets-sheet 3.

(No Model.)

Willi/Illa:y

No. 715,360. lPatented Dec. 9. i902.

C. E. DUUN. PAPER BAG MACHINE.

All t nldNo 6 1901 5 Sheets-Sheet 4.

(No Model.)

` Patented De'c. 9.' |902.v Y c. E. nuLm. Y PAPER BAG MACHINE.

lApplication led Nov. 8, 1901.)

.TW Vl T@ 7- 72 7l m T5( Lma/wt UNrrnn STATES c PATENT Orricn.

CHARLES E. DULIN, OF, SANDYHILL, NEWr YORK, ASSIGNOR TO UNION PAPER BAGMACHINE COMPANY, OF PHILADELPHIA, PENNSYLVA- NIA, A CORPORATION OFPENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 715,360, dated December9, 1902.

` Application filed November 6, 1901. Serial No. 81,294. No model.)

To allA whom t may concern:

Be it known that I,CHARLEsE.DULIN,a citizen of the United StatesofAmerica, residing in Sandyhill, in Washington county, State of pose offacilitating the opening of such paper bags into square form.

The nature of my improvements will be best understood as described inconnection with the drawings in which they are illustrated, and inwhich- Y Figure 1 is a plan view of my machine; Fig. 2, a side elevationwith the driving gear-wheel removed; Fig. 3, a central sectionalelevation taken on the line 3 3 of Fig. 1; Fig. 4., a cross-sectionthrough the formers and suction-boxes, taken as on the line 4. 4 of Fig.1; Fig. 5, a cross-section through the formers and blast-pipes, taken ason the line 5 5 of Fig. 1; Fig. 6, a cross-section through the formersand coacting mechanism, taken on the line 6 6 of Fig. 1; Fig. '7, across-section through the formers and folding-plates, taken on the line7 7 of Fig. 1; Fig. S, a cross-section through the rear end of theformers, taken on the line 8 8 of Fig. 1. Fig. 9 is a side View of theformel-s and reciprocating tuckingblades, illustrating particularly theaction of the tucking-blade upon the bag. Fig. 10 is a similar viewshowing the blade in a more advanced position. Fig. 11 is a side View ofthe end of the bag at the time when the tuckerblade has completed itsoperation upon it; Fig. 12, a side elevation of the rear of thefoi-mers, showing how they act to re-form the bellows fold. Fig. 18 is aside elevation of the tucker and tucker-lever and actuatingcam with thepivot of the lever shown in section. Fig. 14 is a bottom view of theupper former; Fig. 15, a side elevation thereof, Fig. 1b' showing also aside elevation of the presser-plate and plan view ofthe same. Fig. 17 isa cross-sectional View of the feed-rolls by means of which the bags arefed to my machine; Fig. 18, a cross-sectional view of the rolls at theend of the machine, showing particularly the way in which the bags arecreased transversely in the inal operation. Fig. 19 is a plan View ofthe bag prior to its passage through the machine. edge view or sideelevation of the bag; Fig. 21, a cross-sectional view on the line 21 21of Fig. 19, Fig. 22 being a similar View with the omission of the lap.and corresponding with the sections of the bag shown inthe lig- Fig. 2Ois an ures illustrating the machine, and Fig. 23 is a plan view of thecompleted bag.

. A indicates the frame of the machine; B, the driving gear-Wheel,through which power is communicated to the main shaft, (indicated atB'.) The shaft B has secured to it the beltdrum (indicated at B3) and agear-wheel B2, by which motion is communicated to the gear-wheel C onthe lower shaft C', which shaft has secured to it the belt-drum C3 andalso a gear-wheel C2, which through an intermediate wheel c2 drives agear-wheel D, secured to the shaft D', on which in turn is secured thelower feed-roll D2. The gearwheel D' engages and drives the gear E ofthe upper shaft E', to which is secured the upper feed-roll E2, saidfeed-roll being preferably grooved, as indicated, and having aprojecting cross-bar, (indicated at E3.) To the end of the shaft C' issecured a bevel-gear C4, which engages and drives a bevel-gear F on alongitudinal shaft F', having another gearwheel F2 at its rear end bywhich it communicates motion to the gear G, secured to the shaft G'. Theshaft F' has also secured to it a cam, (indicated at F3.) The shaft G'has secured to it the lower belt-drum G5 and on the end opposite to thatto which is secured the gear G a second bevel-gear G2, communieatingmotion through a bevel-gear K toa shaft K', having secured to it in turna cam K3, corresponding to the cam F3. Through a gear-wheel G3, alsosecured to the shaft G', motion is communicated to the gear-wheel H,secured on the shaft H' and to which is secured the upper rear belt-drumH5. Another gearwheel G4, secured on the shaft G', drives, through theintermediate wheel g4, the gear- TOO wheel I, secured to the shaft I',which shaft has secured to it the creasing-roller I2 and the secondgear-wheel, (indicated at 13,) by which motion is communicated to thegear-wheel J on the upper shaft J, to which shaft in turn is secured thecreasing-blade J2. secured around but not to the shaft I.

L and L are carrier-belts, the upper one eX- tending over the rolls B3and H5 and the lower one extending over the rolls C3 and G3.

M M are guides situated between the feedrolls E2 D2 and the belt-drumsB3 C3.

N and n are the formers, having substantially similar oppositely turnedfaces and formed with central grooves (indicated at N n') of the breadthof the belts L L, which breadth is the same as that of the centralportion of the bags to be treated-that is, the portion lying between thebellows-folded sides. At their front ends the formers are preferablyformed with slightly opened lips, as best shown in Fig. 2, and withtheir sides Haring gradually backward, as indicated at N2 n.2, untilthey merge into parallel vertical portions, (indicated at N3 '1L3,)these vertical portions of the sides again merging into curved portionsN4 n4, which at or about the points indicated at N3 n3 the extreme rearend of the formers extend horizontally, lyingin parallel planes.

N6 n are perforations formed through the portions N n of the formers forpurposes to be hereinafter described. The faces of the front curvedportions of the formers are connected by means of perforations N7 withsuction-boxes, (indicated at N3'n3,) P and p indicating the airsuction-pipes leading to a suction-fan. (Not shown.)

O and 0 are thin metallic presser-plates fitted in the central grooves Nn of the formers and having, as shown, vertically-extending posts O 0',which extend through one or more of the perforations N3. The plates arepressed together by the action of springs (indicated at O2 o2) Workingthrough the openings N6 n and suitably held in the formers, as is wellshown, for instance, in Fig. b. g

P and P are blast-pipes connected with a blast-fan (not shown) and.having their nozzles P2 P2 directed into the opening between thediverging front sides of the formers, as is indicated in Fig. 5.

It will be observed that the belts L L work through the grooves N nbetween the plates O o, which act to press the faces of the beltstogether.

Q Q are presser-plates situated parallel to and in close proximity tothe vertical side walls N3 n.3 of the formers. These presserplates aresecured, as shown, to adjustable standards, (indicated at Q.)

R R are tucker-blades secured on the long ends R of pivoted levers R R2,R3 indicating the pivot and r2 cam-rolls secured on the arm R2 andresting against the cams K3 and F3, R4 RAL indicating springs which holdthe camrolls in contact with the cams. The position I4 is a cam of thelevers and the construction of the cam are such that the tucker-blades Rare given oscillatory movement, which carries their triangular pointsinto the partially-opened bellows folds of the bags near the bottom ofthe bags, the tuckers moving forward and acting to distend the cornersuntil they pass between the presser-plates Q and the vertical sides N3of the for-mers, after which the tuckers are withdrawn in position toact upon the succeeding bag.

S S are folding-plates extending from the plane sides N3 'n3 of theformers between the converging sides N4 n4, as is well shown in Fig. l.

Returning to the creasing device at the end of the machine lthecreasing-roll I2 is formed with a longitudinal cavity, in which is setthe creasing-block T, having formed in it a cavity T2 and a bearing atthe base of the cavity, (indicated at T.) In this bearing is situatedthe longitudinal shaft U, having secured to it the lever-arm U', whichby means of a cam-roller rests in contact with the cam I4, a spring U2holding the roller in contact with the cam.

` U3 is a creasing-blade secured to the shaft U and extending up intothe creasing-cavity T2.

V, Figs. 19 and 20, indicates the completed bag as it is fed to themachine, V V' indicating the bellows folds, V2 the cross-folded bottom,V3 V3 the outer corners of the folded bag, and V4 V4 the points orcor-ners where the bellows fold V intersects the bottom of the bag.

In Fig. 23 the bag is represented in the condition in whichv it leavesthe machine, the corners V3 being folded inward into contact with thebellows fold V and the new folds (indicated atV5) formed. Also bypreference a cross-fold V3 is formed across the bag.

In operation the blanks are fed to the machine through the feed-rolls E2D2, the crossbar E3enabling the feeding operative to bring the abuttedend of each bag against this cross-bar, so that it will be fed to themachine in exact relationship with the movement of the differentmechanical parts, or of course any other feeding device having the samefunction may be employed. Passing across the guides M the bag is passedbetween the drums B3 O3 into the bite of the belts L L', which carry itbetween the formers N n. As the bags pass between the front divergingsides of the formers their bellows folds are sucked out, as indicated inFig. 4, this action being facilitated and increased by the action of theblast-nozzles P2, acting also to press the bellows folds of the bags outagainst the gradually-diverging sides of the formers, so that when lthebag approaches the vertical walls U3 of the formers its sides will besufciently distended to enable the triangular tuckers R when they sweepforward to pass between the distended folds, gradually increasing theirdistention, as indicated in Figs.

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Y tracted after they have pressed the corners of the blank beneath thepresser-plates and the bag moving forward passes between thefolder-plates S S and between the converging sides N4 n4 of the folders,which press the bellows folds back to the original position over thefolder-plates S, as is indicated in Fig. 7, the bags passing from therear ends of the formers with their corners tucked in, as indicated inFig. 23, but otherwise in the same condition in which they are fed tothe formers. The refolded bags are passed from between the drums H5 G5over the top of the creaser-roll l2, and, as is shown in Fig. 18, thecreasing-blade J2 presses the paper of the bag down into the cavity T2,formed in the block T, set across the face of the roll l2 and betweenthe wall of said cavity and the pinching-plate U2, which, by means ofits shaft U and lever-arm U', is actuated at the proper time by the camIi. This forms the transverse crease V6, (shown in Fig. 23,) said creasefacilitating the opening of the bag on proper lines.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a machine for tucking in the corners of a bellows-folded bag,formers N, n having their sides curved from substantially horizontal tosubstantially vertical positions and again to substantially horizontalpositions and their front curved sides perforated and connected tosuction-boxes, in combination I with blast-pipes P2 P2 directed betweenthe front curved ends of said formers, means for feeding bellows-foldedblanks betweenthe formers, means for pressing down the corners of thebag on the Avertical sides of the formers and tuckers over which thesides of the bag are folded by the rear curved portions of the formers.

2. In a machine for tucking in the corners of a bellows-folded bag,formers N, n, having their sides curved from substantially horizontal tosubstantially vertical positions and again to substantially horizontaland their front curved sides perforated and connected to suction-boxes,in combination with blastpipes P2 P2 directed between the front curvedends of said formers, means for feeding bellows folded blanks betweenthe formers, means for pressing `down the corners of the bag on thevertical sides of the formel-s, tuckers over which the sides of the bagare folded by the rear curved portions of the formers, and a creaseracting to crease the bag transversely after it has passed from betweenthe for-mers.

3. In a machine for tucking in the corners of a bellows-folded bag,formers N n, having their sides curved from substantially hori- Zontalto substantially vertical positions and again to substantiallyhorizontal, means for feeding bellows folded bags between said formers,means acting on the sides of the bags to open their tucks as they passbetween the front curved sides of the formers, reciprocatingtucker-blades R R acting to engage the partially-opened tucks at theirbottom corners and move forward with the bag over the vertical sides ofthe formers, tucker-plates Q Q, secured close to the vertical sides ofthe formers and between which and the formers the ends of thelsucker-blades R R pass at the end of the forward sweep, andAtucker-plates extending from near the plates Q between the rear curvedsides of the formers over which the bellows folds are refolded.

4. In. a machine for tucking in the corners of a bellows-folded bag,formers N, n having their sides curved from substantially horizontal tosubstantially vertical positions and again to substantially horizontaland their front curved sides perforated and connected to suction-boxes,in combination with blastpipes P2 P2 directed between the front curvedends of said formers, means foi1 feeding bellows-folded blanks betweenthe formers, reciprocating tncker-blades R R acting to engage thepartially-opened tucks at their bottom corners and move forward with thebag over the vertical sides of the forniers, tuckerplates Q Q securedclose to the vertical sides of the formers and between which and theformers the ends of the tucker-blades R R pass at the end of theirforward sweep, and tucker-plates extending from near the plates Qbetween the rear curved sides of the formers over which the bellowsfolds are refolded.

5. ln a machine fr tucking in the corners of a bellows-folded bag, thecombination of the curved formers N, n, having central grooves N, n', ofpresser-plates O, o, situated in said grooves and pressed Atogether bysprings and belts L L' moving in the grooves N n and pressed together bysaid plates 0 o.

GHAS. E. DULIN.

Witnesses:

` A. C. GETTEN,

FRED E. EARLE.

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